Separator.



G. H. FRASER.

SEPARATOR.

APPLICATION FILED JUNE 29, 1915.

1,165,86?. Patented Dec. 28, 1915.

INVENTOR WITNESSES: /M 73 QAM WW GEORGE HOLT FRASER, OF NEW YORK, N. Y.

SEPABAIOR.

Original application filed. December 29, 1910, Serial No. 599,913.

Divided. and this application filed June 29, 1915.

To all whom it may concern:

Be it known that I, Gnonon HOLT FnAsnR, a citizen of the United States, residing in the borough of Brooklyn, in the county of Kings, in the city and State of New York, United States of America, have invented certain new and useful Improvements in Separators, of which the following is a specification, being a division of my application Serial No. 599,913, filed December 29, 1910.

This invention relates to devices for separating, sizing, classifying, treating or collecting, materials by utilizing a fluid current, and aims to provide certain improvements therein.

Heretofore it has been common to distribute material within a feed chamber in which air currents act to draw the fine ma terial into an outer casing, the fines settling in the outer casing and the air returning to the feed chamber, the coarse material falling through the air currents in the feed chamber and discharging from the bottom of the latter.

My invention provides improvements especially applicable to devices of this general character, and in its preferred form it utilizes a non-rotary feed tube and an initial distributer, in conjunction with a plurality of superposed annular distributors successively receiving the material, an annular exhaust chamber for each distributer, a blower for each distributor, an annular discharge passage for the combined exhaust of the several blowers, an auxiliary blower for speeding the current through said pas sage, a centrifugal separator for the dust laden current, and a settling chamber re ceiving the return current and precipitating the material in suspension therein, a reverse return passage for such settling chamber, means for separately withdrawing the different products, and means for controlling the main current.

My invention also includes means for ad justing the non-rotary feed spout, improved bearings and bearing dispositions, improved damper arrangements, and various features of improvement in construction, arrangement and details, all of which will be hereinafter more fully set forth.

The accompanying drawing is a vertical Specification of Letters Patent.

iatented Dec. 28, 1915.

Renewed lull-arch 39, 1915, Serial No. 18,128.

Serial 110. 37,030.

axial section showing the preferred form of my invention.

Referring to the drawing, A indicates a casing, B the driving mechanism, C the feed hopper, D the distributer, E a chamber, F a blower, G the dust chamber, H the return passage, 1 the coarse outlet, and j the fine outlet. These may be of any usual or suitable construction and arrangement capable of distributing the feed, creating the neces sary current, and collecting and discharging the products.

Referring to the drawing 1 will now describe in detail the preferred form of my invention in the adaptation therein illustrated.

The casing A has a cylindrical side wall a, and tapering or conical top and bottom. The upper part of the casing consists of a head 0 which is tapered in the form of a truncated cone and has an annular top (Z, and a central cavity or hole 0. The lower part of the casing consists of a conical bot tom 7, suspended from the top wall a. The wall a is suspended from the top (Z and the latter may be suitably suspended.

The driving mechanism shown consists of a driving shaft 72, carrying fast and loose pulleys i, and geared to the driven parts by bevel gears K and J. This shaft is mounted in bearings in the frame 9, which frame is shown as crossing the machine, and the entire device as shown is suspended from the frame.

The hopper C is preferably a stationary hopper, adapted to turn in any direction toconneot with any source of feed. The feeder is preferably a non-rotary feed pipe J which is preferably vertically adjustable with the hopper, as by screws is mounted on the frame 9, and serves as the hopper outlet, and leads into the casing and discharges onto a feeder or disk K" therein, the speed of feed being determined by vertical adjustment of the pipe, or of the distributor, or of both, as desired.

The distributor is preferably a non-rotary member, and preferably consists of one or more successive distributors, as the rings Q and R which are carried by the cone O and superposed to form a substantially cylindrical pervious or foraminous member or cage surrounding the chamber and the feeder,

U into in the construction shown. Opposite the feeder or disk K is located a bafile ring 7c receiving the discharge therefrom and de fiecting it downwardly toward the ring Q, opposite which there is another reversely inclined ballie ring R, receiving discharge from the first ring Q and directing it down onto the next ring Q", opposite which there is another bafile ring R deflecting the material downwardly toward the next ring Q and so on until the last ring R delivers the material on to the return cone 0. Opposite each baffle ring is an annular exhaust passage. These are lettered P Q and R respectively, and opposite or surrounding these passages the blower F" is provided with a series of blades 7) exhausting from the passages P, Q and B. These blades are preferably vertical. blades, adapted to be driven in either direction, and are proportioned in number and size according to the current desired at the respective passages. The blower blades of each series are separated from those of the next series by rings 8, which constitute essentially the top and bottom wall of each exhaust passage, so that each passage is practically isolated from the other passages by the walls of the distributers and the blower rings. Surrounding the baffle ring is an exhaust chamber a opposite which the blower has blades 0. The blowers all preferably discharge into the exhaust chamber T, which tapers downwardly and outwardly and directs their combined discharge into the annular return passage U, through which it passes to the dust chamber G.

As the air discharges from the passage the settling chamber G the returning air is drawn from it by an annular intake V, of greater superficial area than that of the passage U and concentrically inward thereof, so that the downward motion of the dust in the discharge from the passage U may have opportunity to throw out much dust centrifugally within the chamber G as the air current reverses to reach the return V. The air in the chamber G cleans itself by the process of settling, and by momentum and precipitation, before escaping through the rteurn V, the area of which relative to the passage U is sufficiently great to so diminish the speed of flow of the return current for the air to free itself of much of the floating particles. A baflie ring a is preferably disposed above the chamber G to intercept the air as it whirls inwardly and to direct it toward the adjacent outlet or return V, and a regulating ring or damper W is preferably vertically adjustable within the chamber G to control the air of the return and thus regulate its current speed. Anannular suspended wall 10 constitutes the partition between the passages U and V and serves as the outer wall of the return passage H. The cone 0 constitutes the inner wall of this passage as well as the outer wall of the feeding or suction chamber E, and has an outlet 00. a a

The air current flowing through the inlet of the return passage V, swings inwardly past the damper W and upwardly over the top edge of the lower tailings cone S, and then flows eventually through the passage H to the center of the chamber 0, from whence it may continue to the distributers, between which it may again be drawn through the suction passages by the blowers. In reaching these passages it must traverse the descending shower of material falling from each distributor to the next, composed of coarse and fine material, from which, as the current passes through, particles fine enough to be floated by it will be carried outwardly and approximately horizontally in superposed strata through the blowers, while coarser material will continue over the distributors to the return cone 0 and be dropped from the latter into the bottom of the tailings cone S.

Adjustment or regulation of the currentas to the different distributors may be ob-' tained by differentiating the blowers, or otherwise, but is preferably effected from within the chamber E, as by relatively adjusting the rings R, as shown. In such an adaptation the blowers are carried by a shaft I. The shaft 1 is adjustably supported by the gear J from the bearing M at the top, and is steadied by a bearing N at the bottom, the latter bearing being disposed within a concavity in the head of the casing soas to bring the support as far as possible within the blower and thus aid in resisting any gyratory tendency of the lat ter. In the case shown the disk and the blowers are both carried by the same shaft.

For classifying or grading the fines my invention preferably provides one or more classifying chambers between the blast chamber T and the dust chamber G. One auxiliary settling chamber C is shown, which is preferably concentric of and surrounds externally the chambers G, and surrounds and partly envelops the chamber T. The discharge from the blower is projected outwardly so that large particles are'hurled across the chamber T toward the chamber C as the current slowly flows therefrom toward the inlet 0 to the classifying chamber G, and is discharged downwardly in the latter through this contracted annular inlet, so that larger particles may be projected into the chamber C and fine dust in the current can flow downwardly into the chamber G and may be precipitatedtherein by its velocity and by centrifugal action, as well as by gravity, as the discharge expands therein and the speed diminishes. The exhaust from the chamber 0 is slowly withdrawn through grease? a large outlet a: 'le'adin'gthroiigh the coiie fi) to'the chamber p In its preferred form "the feeder is an inverted cone K, within the 'distribirter L, which as described "preferably (insists (it "a ring and "a plurality oraanaiar reverse oblique plates, Q" and R, "which may "be stationary, relatively adjustable, and approximately cylindrical in their relation, so that the blower F may extend past each without the necessity of 'fiaring it, for asample, as shown in the drawing. In this way the bearings may be brtiught farther within the blower, the cone oi? the reader being relied on toglift "the feed to the top of the annular distributers, and the em being carried from the top or and driven by the cone.

A selector A", as the spaced plates'r" between the rings 15 and blades 29', carried by or revolving with the blower, may be used in the current to give additional centrifugal action to the coarser pieces it carries andto throw these outwardly through the descending currents. An extractor 13, shown as "a series of inclined rings, providing a foran'iinous, pervious orinterstitial wall,"may surroundthechamber T for catchingthe coarser pieces, and a collectingchambe'r C may receive these and discharge'them into an outer casing D.

A supplementary, additional or remote blower E, consisting of blades 25" and ring 1/, carried and driven by the blower F, can be placed in "the chamber G, and carry a cleaner or foraminou's wall J forfthrowing any floating particles through the extractor G, surrounding the chamber H" and having an outlet I into thechamber G.

It will be understood that the invention is not limited to the particular details of construction, arrangement and combination set forth, as it can be employed in whole or in part according to anymodificaaons.

What I'claim -is: I

1 In combination, a casing, means for distributing material therein in "an annular descending stream, annular downwardly and outwardly inclined means in the path of such descending stream and down the outer face of which such material can now, spaced below said distributing means and affording outwardly opening current passages above and below said inclined means, a chamber inwardly of said inclined means and communicating with said passages, a tailings receptacle below said means, an annular chamber outwardly of and surrounding said inclined means and with which said passages communicate outwardly, means affording a conduit communicating between said outer and inner chambers, and means for causing a current to fiow through said lpassages from ione to the other of said chambers.

an combination, a casing-imam "for dis:

tribtiting inaterial therin inan annular descending stream, annular means atthe outer and inner sides of "such descending stream a'ilording a downward passage for material sfiacedfbelow "said distributing means and affording oiitwardly opening current passages above b'e'ldw =such "annular me'ans, a chamber inwardly of such "annnlar means, a tailings receptacle "below such annular means, an annular chamber ontw'ardly o'ii'and surrounding su'ch annular means and communicating outwardly thereof with said passages, means 'a flordi'ng a conduit com- Innnic'ating between said chambers, and means for 'caasin aearrent to flow through said current passages,

3. Tn "combination, a casing, means for distributing material therein in an annular descending stream, annular "means in the path of sub deseeaaing "material at the inner side thereof'over which said material may flow, spaced apart from said distributi'ng means and afiording an outwardlyopening current passage "above and below said annular means, downwardly and inwardly inclined annular means below and spaced apart from said first mentioned annular means and in the path (if such descending stream for "receiving descending material, a chamber inwardly of said annular means and communicating with said passages, an annular chamber surrounding said annular means and into which said passages communicate outwardly thereof, means 'afiording a conduit communicating between said outer and inner chambers, and means for causing a current to flow through said current assage p In separators the like, a casing, and means for creating a current therein, in combination with means for distributing material therein comprising 'a revolving inverted cup-shaped member having upwardly flaring "sides terminating in annular discharge edge near the top of said casing, an upwardly extending shaft for said member, a bearing for said'shaft disposed above the bottom oflsaid member and within the flaring walls thereof, a baiile ring surrounding the upper edge of said member for deflectin'g material discharged therefrom downwardly in said casing, a tailings cone below said ring for receiving such material, a chamber surrounding said distributer, a settling chamber below said chamber, and a conduit communicating between said sett-ling chamber and the space below said distributer.

5. In separators and the like, a casing having a feed chamber and a central aperture, andmeans for creating a current therein, 'incombination with a revolving feeder comprising an inverted cup-shaped member within said feed chamber and having an upwardly exaaaijag discharge edge near the top thereof and an upwardly extending driving shaft, a bearing above the bottom of said feeder having a bearing portion disposed within the cup-shaped part of said feeder, a plurality of downwardly and outwardly inclined superposed distributing rings surrounding said feeder, and driving mechanism for said feeder above said casing.

6. In separators and theylike, a casing, means for creating a current therein, in combination with means for distributing materialin said casing comprisinga plurality of outer and inner reversely inclined rings having outlets between them for descending material and current passages above and below them for outflowing current, and means supporting said outer rings from below at points remote from their inner edges and means for supporting said inner rings at points remote from said outlets to afford an uninterrupted annular space between them for descending material.

7. In separators and the like, a casing, in combination with a revolving feeder therein, a distributor comprising superposed reversely inclined rings below said feeder, a

7 site said rings cylindrical blower surrounding said distributer, a chamber surrounding said blower, and a return conduit communicating between said chamber and the interior of said distributor.

8. In separators and the like, a casing, and means for distributing material therein, in combination with a superposed series of similarly inclined rings of like diameter through which such material may descend in said casing, reversely inclined rings opporespectively and affording current passages beneath the latter, an annular discharge chamber surrounding said rings, a settling chamber below said discharge chamber, a return chamber inwardly of said rings, a conduit communicating between said settling chamber and said return chamber, and means for causing a current to traverse substantially horizontally outwardly through said passages, comprising annular partitions opposite said rings affording current passages communicating with the passages therebetween respectively.

9. In separators and the like, a casing, means for distributing material therein, a chamber surrounding said means, and means for causing a current to flow outwardly through said material, in combination with an annular interstitial wall or member surrounding said chamber for extracting from such current particles crossing said chamber. 7

I 10. In separators and similar devices, the combination with a plurality of stationary superposed annular distributers for material to be separated, of annular partitions opposite said distributors respectively afording an independent outwardly opening current passage for each distributer and an annular chamber approximately horizontally of-and surrounding said distributors receiving and combining the current flowing through each of said passages.

11. In separators and similar devices, the combination with a plurality of stationary downwardly and outwardly flaring superposed annular distributers of like diameter for material to be separated, of means opposite each distributer for causing a separate outwardly flowing current beneath it, and an annular chamber surrounding saiddistributers and receiving and combining the currents flowing beneath each of the latter.

12. In separators and the like, a casing, means for distributing material therein, means for causing a current to traverse such material therein, a settling chamber, and outwardly extending return passage for the current from said settling-chamber, a conduit connecting, said passage withsaid casing at the inner side of said distributer, and means in said outwardly extending passage for extracting material from the current blowing outwardly thereof.

13. In separators and similar devices, a series of distributers, a series of revolving blowers, intervening annular stationary members utilizing said parts, and means for adjusting one of said parts relatively to the others.

14. In separators and similar devices, a tubular feed pipe, a revolving disk opposite said pipe, a tubular shaft for said disk, a revolving blower surrounding said disk, a tubular shaft for said blower, means for adjusting one of said parts relative to the other said parts, and means for supporting said blowerbelow its uppermost blades.

15. In combination, a casing, distributing means for causing material to descend therein in an annular path, means for collecting such descending material below and spaced apart from said distributing means and affording an outwardly opening current passage beneath the latter, a chamber inwardly of said means, an annular chamber surrounding said path outwardly of said dis tributing means and with which said current passage communicates, means affording a return conduit communicating between said chambers, means for causing a fluidcurrent to flow from said inner chamber through said passage into said outer chamber and return through such conduit, and annular foraminous means crossing the path ofsuch current returning from said outer to said inner chamber for intercepting material carried by such current. a

r 16. In separators and the like, a casing, means for distributing material therein, and means for causing a current to flow outwardly through said material, in combinati n'. ith an annu ar ch m er. su o n ing said distributing means, an annular precipitation chamber below and opening into said first annular chamber adjacent to said means for receiving material precipitated adjacent to the latter, and an outer annular chamber surrounding said precipitation chamber and opening into said first annular chamber for receiving material threfrom outwardly of said precipitation chamber.

17. In combination, a casing, distributing means for causing material to descend therein in an annular stream, collecting means for such descending material below and spaced apart from saiddistributing means and aiiording a current passage beneath the latter, a chamber inwardly of said means and communicating with said passage, an annular discharge chamber outwardly of said distributing means, surrounding said path, and communicating with said current passage, means aflording an outlet for material from said inner chamber, means affording a separate outlet for material from said discharge chamber, means aiiording a return conduit communicating between said outer and inner chambers, means for caus- Gogies of this patent may be obtained for ing a fluid current to flow from said inner chamber into said discharge chamber, and annular outer chamber surrounding said discharge chamber, means surrounding said discharge chamber intermediate of it and said outer chamber for intercepting material carried by said current.

18. In separators and the like, a casing, means for distributing material therein, a settling chamber, and passages leading to and from said chamber, in combination with a blower in said chamber.

19. In separators and the like, a casing, means for distributing material therein, a settling chamber, and passages leading from the latter, in combination with an extractor chamber surrounding the passage leading from said chamber.

In witness whereof, I have hereunto signed my name in the presence of two subscribing witnesses.

GEORGE HOLT FRASER.

Witnesses:

GUSTAV Sorronnmr, ANTONIO BUoNo.

five cents each, by addressing the Commissioner of Patents,

Washington, D. C.

an annular foraminous 1; 

